Answer:
V = 3.5 m3
Step-by-step explanation:
length l = 1 m
width w = 2 m
height h = 1.75 m
volume V = 3.5 m3
A student answers 70% of the questions on a math exam correctly. If he answers 21 questions correctly , how many questions are on the exam ?
Answer:
There are 30 questions
Step-by-step explanation:
70%=21
70%÷7=10%
21÷7=3
10%=3
10%×10=100%
3×10=30
Hope this helped :)
ILL MARK U BRAINLIEST!!
Answer:
It's the bottom one.
Step-by-step explanation:
number one makes no snese because inside of you there is no light
number two, heat and thermal are the same thing
number three, there isn't really potential energy inside you, not in the process of the energy transformation of food.
The bottom one makes the most sense because if you think about all of the steps, it goes chemical (stomach acid), there is also some heat in there, and then mechanical when the food moves from place to place
Answer:
The answer is D
Step-by-step explanation:
9h+25=65 find the slope and y-intercept
A rectangle has a length that is three feet more than twice it's width. The perimeter of the rectangle is 78 feet. State the value for the width.
Let the width of the rectangle be 'w'
According to the question length of the rectangle (l) is three feet more than twice it's width;
[tex] \longrightarrow [/tex] l = (2w + 3) ft
Perimeter of rectangle = 78 ft
Formula of perimeter of rectangle = 2(Length + Width)
So,
[tex] \rm \implies 2(Length + Width) = 78 \\ \\ \rm \implies 2(2w + 3 + w) = 78 \\ \\ \rm \implies 2(3w + 3) = 78 \\ \\ \rm \implies 2 \times 3(w + 1) = 78 \\ \\ \rm \implies 6(w + 1) = 78 \\ \\ \rm \implies w + 1 = \dfrac{78}{6} \\ \\ \rm \implies w + 1 = 13 \\ \\ \rm \implies w = 13 - 1 \\ \\ \rm \implies w = 12 \: ft[/tex]
[tex] \therefore [/tex] Width of the rectangle (w) = 12 ft
If two angles of measure (x + 3)º and (2x – 9)º
complementary, then what is the value of x?
HELP ME FAST.
Step-by-step explanation:
(X+3)(2x_9)
3x+12_12=90_12
3x=90_12
3x=78
X=26°
can you pls help this is 6th grade math
Answer: 12 red 9 blue
Step-by-step explanation:
????????? Help pls & thanks
7. What is the area of the shaded region?
5.6 cm
6.4 cm
5.8 cm
1.2 cm
0.8 cm
The Giant Anteater can eat 70,000 ants in 2 days. It’s true
Answer:
cool
Step-by-step explanation:
is this a question?
what percent is 30 of 20
Answer:
1.5
Step-by-step explanation:
Lmk if i need to explain!
What is the awnser to that question
Answer:
C. 2 and 5
Step-by-step explanation:
In triangle DEF, segment DJ is a perpendicular bisector of side EF. If EJ is 3y-8 and JF is 7y-40, what is the length of JF?
Answer: The length of JF = 16 units.
Step-by-step explanation:
Given: In triangle DEF, segment DJ is a perpendicular bisector of side EF.
i.e. DJ is perpendicular to EF and DJ divides EF into two equal parts EJ and JF. [The perpendicular bisector is a line that is perpendicular to a line segment and splits it into two congruent segments.]
If EJ is 3y-8 and JF is 7y-40.
Then, [tex]3y-8=7y-40[/tex]
[tex]\Rightarrow\ 7y-3y=40-8\\\\\Rightarrow\ 4y=32\\\\\Rightarrow\ y=8 \text{ [Divide both sides by 4]}[/tex]
JF= 7(8)-40 =56-40= 16 units
Hence, the length of JF = 16 units.
Answer:
plz giv brainlist
Step-by-step explanation:
Oliver is using plywood to build the skateboard ramp shown. Three sides of the ramp are rectangles. How many square feet of plywood does Oliver need to build the ramp?
I will mark brainliest
Answer:
18
Step-by-step explanation:
Use the the image below to determine the angle type, relationship, value of x, and the missing angle measures.
Type =
Relationship =
Value of x =
Missing angle measures =
Answer:
Name: alternate exterior angles
Relationship: they are congruent. (15x + 5)° = (14x + 11)
Value of x: 6
Missing angle measures: 95°
does the ordered pair (8,48) satisfy the direct equation y=6x? explain why or why not
Answer:
i think yes the order pair of (8,48) satisfy the direct equation y=6x
Step-by-step explanation:
Jennifer sells cosmetics. Her commission is 30 percent of the selling price of every item she
sells. What is her commission when she sells cosmetics totaling $717.53?
Answer:
$215.26
Step-by-step explanation:
717.53*30%= $215.26
Which one??? I need help. Be serious please
Answer:
c
Step-by-step explanation:
10+12=22
=22^2
=484
Answer:
I believe the answer is C or D.
Step-by-step explanation:
what is the domain of f(x)=2x is all real number or all positive number or all positive and zore
Answer:
The domain is all real numbers
Step-by-step explanation:
There aren't any restrictions like a square root, an even exponent, or a denominator. If you ever get stuck, feel free to use something like the Desmos graphing calculator to graph out the equation.
need rn! worth 13 ~ what is the equation of the parabola? 謝謝
Answer:
Its B.
Step-by-step explanation:
Emath.com- Parabola calculator
What is the answer for both?
Answer:
What is the question from both?
Answer:
(4,2) for the first one
(2,-1) for the second one
to get the answers I got, equate Both
HELP ME LLEASE WUIZ OMG WHAT ARE THE CORDS? 30 points
Answer: -1/2 and 1/3
Step-by-step explanation:
What is mZCAD?
O 80°
O 20°
O 80°
O 100°
O 110°
Answer:
The angle of CAD is 100°.
Step-by-step explanation:
Given that total angles in a triangle is 180° so you will have to find the angle of CAB :
∠CAB + ∠ACB + ∠ABC = 180°
∠CAB + 80° + 20° = 180°
∠CAB + 100° = 180°
∠CAB = 180° - 100°
∠CAB = 80°
Next, you have to subtract it from 180° because straight line have a degree of 180°
∠CAD = 180° - 80°
∠CAD = 100°
Select all of the statements that are true for the given parabola
Answer: Please provide statements.
Step-by-step explanation:
Answer:
The maximum is (-1, 6).
The line of symmetry is x = -1.
Step-by-step explanation:
those two
What is the correct answer?
Answer:
C) y = 10/3x - 5
Step-by-step explanation:
Slope intercept equation is y = mx + b:
m is the slope
b is y-intercept
When you read slope you can also read it as rise over run. Rise is move up or down on the y axis depending if number is negative or positive. Run is move left or right on x axis depending if number is negative or positive.
Example: y = [tex]\frac{10}{3} x - 5[/tex]
Start at the y-intercept which is -5. On graph you can see the line crosses the y axis at (0, -5). From this point rise 10 then run 3 you'll end up at point (3, 5). Connect the dots of the two points and you'll see a line like the one in the problem.
John writes the proof below to show that the sum of the angles in a triangle is equal to 180º.
Answer:
When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent.
Step-by-step explanation:
i did it
Find the measure of each missing angle.
Answer:
<1=63°
<2=49°
<3=87°
<4=44°
Step-by-step explanation:
<1=180-68-49=63°
<2=49°
<3=180-93=87°
<4=180-49-87=44°
4. Which r - value suggests a strong
positive correlation?
r= 0.1847
r= -0.1847
r= 0.9974
r= -0.9974
Answer:
It would be r= 0.9974.
The closer the r value is to 1 or -1 the stronger it is.
Positive and negative are just determining what "side" its on.
Let me know if this helps!
In this diagram, each square represents 1 km. What is the displacement of the car?
Explanation:
With displacement, all we care about is the beginning and end. We don't care about the middle part(s) of the journey. So we'll take the straight line route from beginning to end when it comes to computing displacement.
We start at A(0,0) and end at B(-2,0). Going from A directly to B has us go 2 km west. Keep in mind that displacement is a vector, so you must include the direction along with the distance.
Answer:
c
Step-by-step explanation:
PROBLEM SOLVING Find the value of k so that the graph of the equation has the given y-intercept.
y = -1/3x + 5/6k; b = - 10
K=?
Answer:
2k⋅(3k−7)⋅(k+4)
Step-by-step explanation:
STEP
1
:
Equation at the end of step 1
((6 • (k3)) + (2•5k2)) - 56k
STEP
2
:
Equation at the end of step
2
:
((2•3k3) + (2•5k2)) - 56k
STEP
3
:
STEP
4
:
Pulling out like terms
4.1 Pull out like factors :
6k3 + 10k2 - 56k = 2k • (3k2 + 5k - 28)
Trying to factor by splitting the middle term
4.2 Factoring 3k2 + 5k - 28
The first term is, 3k2 its coefficient is 3 .
The middle term is, +5k its coefficient is 5 .
The last term, "the constant", is -28
Step-1 : Multiply the coefficient of the first term by the constant 3 • -28 = -84
Step-2 : Find two factors of -84 whose sum equals the coefficient of the middle term, which is 5 .
-84 + 1 = -83
-42 + 2 = -40
-28 + 3 = -25
-21 + 4 = -17
-14 + 6 = -8
-12 + 7 = -5
-7 + 12 = 5 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -7 and 12
3k2 - 7k + 12k - 28
Step-4 : Add up the first 2 terms, pulling out like factors :
k • (3k-7)
Add up the last 2 terms, pulling out common factors :
4 • (3k-7)
Step-5 : Add up the four terms of step 4 :
(k+4) • (3k-7)
Which is the desired factorization
Final result :
2k • (3k - 7) • (k + 4)
(please i'm taking a test) A fraction is never a rational number true or false